Needle-pointer



G. OLSON.

NEEDLE POINTER.

APPLlcATroN msn muze. |920.

1,361,091, y Patented 1160.119211.

UNITED lSTATES PATENT OFFICE.

GUs'rAr' oLsoN, or CHICAGO, rumors.

NEEDLE-POINTER.

Specification of Letters Patent.

Patented Dec. 7., v1920.

Application led January 26, 1920. Serial No. 354,114.

My invention relates to instruments for pointing or repomtmg wood or fiber reproducer needles for phonographs or other pur` poses requiring needles of this type. The object of the present invention is to provide further improvements in the type of clipper or cutter disclosed in Letters Patent No. 1,259,434 granted tome under date of March 12, 1918, to the ends of simplifying and rducing the cost of manufacture and to provide increased accuracy and efficiency.`

With these objects in View my inventionconsists in the novel construction, combination and arrangement of parts, hereinafter described in detail, illustrated in the accompanying drawing and more particularly pointed out in the appended claims.

In the drawing- Figure 1 is a side elevation of substantially a full device embodying my invention.

Fig. 2 is an enlarged reproduction of Fig. 1, partly broken away and in section.

Fig. 3 is a bottom plan view of a broken awayy portion. i

Figs. 4 to 7 are detail views on substantially the scale of Fig. 1

Fig. 8 is a `section taken substantially on the line 8 8 of Fig. 2; including a needle portion in operative position.

Fig. 9 is similar to Fig. 3 with vthe guard plate omitted and showing a fiber filling for a part of the needle opening.

i In the several views 2 and 3 represent handle portions of a pair of pivoted together members stamped out of sheet metal in channel form, or of U-shaped cross section, the former including a pair of compass-joint disks 4 and 4 arranged between a similar pair of disks 5 on the member 3 and all rotatable on a pivot or axis 6 the ends of which are preferably riveted to the disks 5. The disks 5 are extended forwardly into a jawelike member with a pair of parallel walls 7 and 7 whichy'eXtend from the base portion -8- of the U-shaped member. From the point labeled 9 of the U-shaped member 2, 4, 4 projects forwardly'a beak, finger or jaw-like portion 10 ,which is movable in and normally forms a' wall dividing each of the disks 4 and 4 the space between the walls 7 and 7. The latter together with the disks 4, 4, wall portion 10 and base portion 8 form a protective housing for the knife, bit or cutter and movable parts associated therewith.

. Within said housing is secured to the baseportion 8 by means of a rivet 11,V or other suitable means, a metal plate 12 over and against which is slidable a bit or cutter 13 having a knife edge 14'that. is held against said plate to make the bit self-sharpening, by slightly raising the rear end of the bit on a downwardly and then horizontally bent lug portion or end flange 15 formed on said rear end of the bit. All of the members are yieldingly held in their normal positions and the bit is spring-tensioned against the plate 12by a single helical spring 16 of the type which in various suitable sizes are obtainable in the general market as an .article of' commerce.- One end of this spring is hooked into an aperture in the top of an upright portion or post 17 which ispart of a bar or -plate bent to form said upright portion and a curved vhorizontal portion 18 the -free end of which is caused to bear at 19 against the body of the bit o'r cutter 13. The opposite end of the spring 16 is hooked into a perforated lug or extension 20 of a bar 21 that is bent to form a horizontal portion 22 which bears against the forward or edged end of the bit 13 and a similar horizontal, or foot, portion 23 which reaches the plate 12. The member 20 to 23 is preferably a flat strip of metal stepped as shown and also provided with a pair of perforated ears 24 struck up from its opposite edges. These ears are mounted on a pivot pin 25 which spans the space between the disks 4 and 4 and has its ends secured to said disks at a suitable and predetermined radial distance from the pivot 6 on which the handles 2 and 3 and parts integral therewith move. In

These notches are engaged by laterally projecting lugs 27 and 28 on'the bit 13 and are in the edges ofsaid disks. The rotary movements of the disks 4 and 4 therefore impart reciprocating movements to what may be termed the presser foot 23, the latter having a shorter movement by reason of the fact that its wrist or pivot pin 25 is on a shorter radius than the; notches 26 with reference to their common center of movement 6. In the portions 22 and 23 of the is cut a notch 26.

the bit 13. and

member 21 and in their connective inclinedv portion is a rectangular opening 29 which is brought into register or opposite an opening 30 through the base portion 8 and plate 12, the opening 30 being usually of triangular form, or of whatever the form of the needle cross section is. In the member 18 is also a 'triangular opening 3l-4 opposite the inner end of the spring`16'to make clearance for said end as it moves to and fro. The member 18 is held in place on the member 3 with thev aid of the spring tension thereon, by a pair of laterally projecting lugs 32 and 33 which engage notches 34 and 35 in rearward projections or extensions 5 andl 5 from or on the-disks 5 which are contracted to-lie and,V place the handle 3 in substantially the plane of the disks 4 and 4 and the handle portion 2 thereof.

On the rivet 11 is mounted for limited pivotal adjusting-movement a guard or guide late 36.'l This plate is clamped onto the ase portion Sagainst movement on its pivot 11 by a set screw 37 which engages a threaded bore in the parts 8 and 12. In the plate 36 is a slightly larger bore 38 for the set screw, suliicient to permit the lnecessary adjusting movement of the plate in which is a triangular or cut out portion or notch30 that is adjustable over the triangular opening 30 through the parts 8 and 12 to slightly increaseor decrease the size of said lopening to adapt it to the cross section of the needle for'thep'urpose of holding the latter firmly while its point is shaved by the knife and thereby avoid the heretofore prevalent bur on needles re-pointed by instruments of this class. The foot portion 23 of the member 21 has intermediate of its edges a raised portionV 40 which provides a space 41 the depth -ofwhi'ch determines the extent to which the needle -42- may be inserted in front of the edge 14 of the'bit. The abutment or stop 40 may be elevated to any desired extent above the plane of thev cutting edge, but for resharpening VVpurposes it is desirable to make the operation a shaving one.

In the' above-described construction a single spring of a type'that, in this connection, is practically indestructible, serves toV yieldingly hold the' handles and jaw membersV in their normal position* as well as to hold the bit against itscoperating plate and the stop 23 against the'same plate. As the handles 2 and 3A and therewith'the bit are moved op- 'erativelythe spring tension and the pressure upon the bit increases as the latter advances toward the end of its cutting movement. Theedge of the bit is thus honed or automatically' re-sharpened before and afterV each* cuttingV operation, and this to the f extentv ofthe spring pressure upon the bit and' the quality/of material in the plate 12.

Asi/shown, thel knife edge is retracted, when notoperating, a substantial distance away gsaid Ymembers `inf theirv normal positions.

housing, so that even rough usage or accidentally dropping. the device among other pieces of metal will not impair its operativeness. The foot portion 23 of the also movable member 21- is caused to move out of the way after it has served as a gage kor stop to leave a clear space for the chip or shaving made by Vthe knife, including the opening 29. In its return movement to normal position it serves as a sweep to brush away any chip or shaving'which would tendfto remain in the way of subsequent operations, or to loosen such chip or shaving so thatit is free to'drop out of the housing where it is open at the rear.

At the angle of the opening 30` toward which the point of the needle 42 moves when being inserted is a recess 43`which is filled with a liber disk 44, or other suitably relatively soft material. This disk is designed to protectthe'point of the needle against the breakage of said point meeting a hard metallic substance.

The diferent parts of the above described constructionof'needle pointer are designed 90 to obviate hand work other than that of grinding the edge of the knife 13. After its initial grinding the knife edge will be automatically honed or sharpened by its movement against the plate 12, and in its always sharpened condition the normal retraction of the edge away from the needle opening and its complete housing will prevent aceidental. contact with objects that would dul an uninclosed knifeI edge.

I claim as Vmy'invention- Y 1. The combination with a needle cutter, of a pair of pivoted together handle members and housing portions, the bottom of the housing being an apertured bearingv plate, a cutter slidable on said bearing plate, and spring-tension means for holding said handle members and housing portions in their normal position and for pressing said cutter against said bearing plate.

2. In aneedle4 cutter, the combination with a pair of pivoted together and toward each other concaved members which form a housing, of a cutter and needle-holding means on one of said members, and a movable needle stop or gage andzpressure-bar pivoted to one of said members and springtensioned against the other of said members Iand against said cutter.

3. In a lneedle cutter, the combination with apair of pivoted together handle and housing members, of an apertured bearingplate, a cutter slidableon said bearing plate and movably connected with one of said members, la pressure bar and needle gage pivoted to one of said members, an elbow lever also hearing on said cutter, and spring- Vtensioning means between said elbow lever and pressure bar which also servetohold 4:. In a needle cutter, the combination with pivoted together hollow jaw and handle members, or' an apertured bearinor plate, 'a cutter slidably mounted on said bearing plate, a Cutter pressure bar and gage connected for reciprocal movement to one of said members, and a spring-tension device for holding the handle portions of said members normally apart, for forcing said pressure bar against said cutter, and for exerting pressure against said cutter independently of the pressure thereupon by said pressure bar. A

5. The combination with a pair of pivoted together members forming a chamber and 15 handle portions, of a cutter slidably mounted on one of said members, the latter memmovable along said cutter and over said 20 opening, a spring-anchor post having a part bearingv against said cutter, and a spring be tween said post and pressure bar tending to draw same toward each other.

In testimony7 whereof I have signed my name.

GUsTAF oLsoN.

hereunto 2 5 

